Astronomy

Astronomy

A vivid image of a galaxy with bright blue and red nebulous clouds, set against a black star-filled background in deep space.
With unprecedented resolution, wavelength sensitivity, and light-gathering power, JWST reveals our cosmos like no other observatory ever.
A deep space image shows numerous distant galaxies and stars against a dark background, including several bright spots shaped by a gravitational lens cross, with diffuse light sources scattered throughout.
Gravitational lenses arise when foreground masses and background light sources properly align. Einstein rings are rare, but crosses abound.
Diagram showing light from a distant galaxy bending around a red-hued massive object, reaching telescopes on Earth via different paths and at different times.
The VENUS survey isn't about planets at all, but about finding multiply-lensed supernovae. The ambition? To save the expanding Universe.
Astro2020
US science is worth fighting for, but so are the science projects and scientists denied opportunities. Here are 4 paths all worth exploring.
Five panels show NASA Chandra images of Kepler's supernova remnant as it expands over 25 years, with increasingly diffuse blue filaments against a starry background; a composite is shown in the last panel.
Back in 1604, Johannes Kepler discovered the Milky Way's last naked-eye supernova. Here's how NASA's Chandra sees it over the 21st century.
A colorful map shows the distribution of nearby galaxies, with distances and redshift factors labeled, created by DESI; NSF, NOIRLab, and Kitt Peak logos are visible.
The seeds of cosmic structure that were planted back during the Big Bang grew into the cosmic web we see today. What is it telling us?
Three planets are silhouetted against deep space with a bright red star and nebula clouds in the background.
Astronomer Lisa Kaltenegger spoke with Big Think about how "the colors of life" could leave detectable traces on distant planets.
Even the youngest galaxies are often dust-rich, even with very low levels of heavy elements. Nearby dwarf galaxy Sextans A explains why.
A galaxy cluster with a faint purple glow, showing a dotted yellow circle in the center, surrounded by distant stars and galaxies.
Astronomers have found starless gas clouds before, but Cloud 9 might be the most pristine one of all, with big lessons for cosmic history.
A field of distant galaxies in space with a blue-tinted, magnified section highlighting a single bright celestial object observed by JWST, possibly rich in oxygen.
In a galaxy less than 300 million years after the Big Bang, oxygen's presence abounds. That's expected; its absence would truly be profound.
how many planets
There will always be "wolf-criers" whose claims wither under scrutiny. But aliens are certainly out there, if science dares to find them.
jwst Abell 2744 450 million
If you can identify a foreground star, the spike patterns are a dead giveaway as to whether it's a JWST image or any other observatory.
An artist's impression of an ultra high energy cosmic ray.
The highest-energy particles could be a sign of new, unexpected physics. But the simplest, most mundane explanation is particularly iron-ic.
JADES galaxies
While humanity has been skywatching since ancient times, much of our cosmic understanding has come about only recently. Very recently.
A nebula in space glows with bright purple, pink, and blue hues, surrounded by stars and cosmic dust where new stars form in our expanding universe.
Our Universe doesn't just expand and cool, but the expansion itself is accelerating. Can stars form under such structure-erasing conditions?
Diagram illustrating Earth's orbit around the Sun, showing the tilt of Earth's axis, the seasons, equinoxes, solstices, and directions to celestial poles.
Earth orbits the Sun while spinning on its tilted axis, with two annual occasions marking that maximal tilt. That's where solstices arise.
Diagram showing light from a distant galaxy bending around a red-hued massive object, reaching telescopes on Earth via different paths and at different times.
With the observation of SN 2025wny, a lensed superluminous supernova, astronomy's future comes into sharp, exciting focus.
Illustration of various carbon molecules, including buckyballs and graphene sheets, floating in space near a bright cosmic background with stars and nebulae.
It takes a wide variety of processes in the Universe to make all the elements that populate space today. We're still discovering new ones!
A large group of people stands together inside a spacious, industrial facility—likely the LHC—surrounded by tall machinery, pipes, and metal structures, celebrating the best 2025 discovery in particle physics.
Some vital, key ingredients must be in place for the Universe to make more matter than antimatter. The LHC took us one step closer in 2025.
Two space telescopes with solar panel arrays are shown against a plain, dark background. NASA's Habitable Worlds Observatory is represented by one with a hexagonal mirror, highlighting its role in advancing space science.
Finding alien Earths requires seeing Earth-sized planets at Earth-like distances from Sun-like stars. A new discovery completes the roadmap.
A mesmerizing starry sky with shooting stars and a majestic tree.
With a waning Moon and a denser-than-ever debris trail, 2025's Geminids might be the year's best meteor shower, and 2026's could be amazing.
Two side-by-side images of the Pillars of Creation in the Eagle Nebula showcase different views with vibrant colors and star-filled backgrounds, embodying the great paradox of beauty within science.
There are so many problems, all across planet Earth, that harm and threaten humanity. Why invest in researching the Universe?
el gordo JWST rotated cropped
Although American Thanksgiving only comes once a year, the scientific rules that make our Universe possible are always worth appreciating.
moon two faces
The far side of the Moon is incredibly different from the Earth-facing side. 66 years later, we know why the Moon's faces are not alike.
Silhouette of a human figure made up of colorful dots with a cloud-like mist behind it, set against a dark background.
13mins
Everything ever seen — every star, mountain, and face — makes up less than 5 percent of the universe. Astrophysicist Janna Levin reminds us that the rest — dark matter and dark energy — is invisible, mysterious, and everywhere. We are the luminous exception in a universe of darkness.
supermassive black holes
Such massive, early supermassive black holes have puzzled astronomers for decades. At last, we've finally figured out how they form.
A telescope beneath a colorful, abstract visualization of the universe, with a starry night sky in the background.
Every observation out into deep space is also a look back in time.
One side of the Moon always faces us: the near side. The "dark side" of the Moon began as a mere metaphor, but today, science can weigh in.
hoag's object
Spirals, ellipticals, and irregulars are all more common than ring galaxies. At last, we know how these ultra-rare objects are made.
flight through universe CEERS JWST NASA
Wavelengths stretch, distances grow, and temperatures cool as the Universe expands with time. How are the various cosmic parameters related?